Kerala PSC Previous Years Question Paper & Answer
Page:15
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Workshop Instructor/ Demonstrator/ Instructor Grade II in Electronics and Communication' And exam conducted in the year 2023. And Question paper code was '058/2023'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
93.
94.
95.
96.
97.
98.
99.
100.
058/23
The bandwidth requirement is high in
A) PAM B) PPM
൭ PWM D) Both B) and C)
Companding is the process of
A) Compression B) Compression and Expansion
C) Expansion D) None of the above
Name the modulation technique which requires synchronization between transmitter
and receiver.
A) PAM B) PWM
C) PPM D) PCM
The binary waveform used to generate BPSK signal is encoded in
A) Bipolar NRZ format B) Manchester coding
C) Differential coding D) None of the above
QPSK system uses a phase shift of
(م > 8( 2
C) ൯/4 0) 2ஈ
The technique used to reduce the sideband power is
A) MSK B) BPSK
C) Gaussian minimum shift keying D) BFSK
In BFSK, mark and space respectively represent
^) 18೧060 8) 08೧761
C) 00 and 11 D) 11 and 00
In PCM, Noise is measured in
A) Mel B) Decibel
C) Phon D) Zone